Sammendrag
The explosive global growth of open networks has raised concerns with respect to the adequacy of security and privacy measures for information and communication systems and for the data that is transmitted and stored on those systems. The developing information infrastructure is a mixture of all kinds of computer-related crimes, including fraud, privacy infringement, etc. Electronic business may not advance until effective security measures are adopted and trusted by users and consumers alike. In particular, information has become increasingly popular resource in the Internet Age. For this reason, effective protection of information resources determines the success and failure of businesses as well as ensures the national security of countries (i.e. through the protection of critical information infrastructures and resources). Today, this protection can be guaranteed by the use of powerful cryptographic methods whose efficiency are increasingly greater than ever.